Dipent-4-enyl acetals, which are congeniently prepared by treating ketones or aldehydes with pen-4-enyl alcohol under standard conditions, readily acetalize diols in acetonitrtile solvent, and although neutral promoters such as N-halogenosuccinimides and iodonium dicollidine peerchlorate are effective, the rates and yields are greatly enhanced by the addition of catalytic amounts of an acid.
Ferrier Rearrangement under Nonacidic Conditions Based on Iodonium-Induced Rearrangements of Allylic n-Pentenyl Esters, n-Pentenyl Glycosides, and Phenyl Thioglycosides
作者:J. Cristobal Lopez、Ana M. Gomez、Serafin Valverde、Bert Fraser-Reid
DOI:10.1021/jo00117a042
日期:1995.6
Acetal Transfer via Halonium-Ion Induced Reactions of Dipent-4-enyl Acetals: Scope and Mechanism